HEVAE Vegetation Groundwater Dependent Ecosystems Value - Sydney Metropolitan

NSW DoI Water has adopted the Guidelines for Identifying High Ecological Value Aquatic Ecosystems (HEVAE) framework developed by the Australian Commonwealth Government. In the current assessment for NSW, the HEVAE consists of four key criteria which include diversity, distinctiveness, naturalness and vital habitat. Therefore, the HEVAE vegetation GDE value layer is a combination of four individual criterion layers. The final or overall HEVAE score was determined for vegetation PCT polygons which has a high probability of being groundwater dependent. This was calculated by adding together the final scores for each criterion (Naturalness, Diversity, Distinctiveness and Vital Habitat). This score was then standardised by dividing by the maximum combined HEVAE score for a whole catchment’s vegetation GDE polygons to provide an even spread of score outcomes between 0 (lowest) and 1 (highest). For ease of data modelling and management, the dataset was divided into the following catchment management areas; Border Rivers-Gwydir, Central Tablelands, Central West, Hawkesbury-Nepean, Hunter-Central Rivers, Lachlan, Lower Murray Darling, Murray, Murrumbidgee, Namoi, Northern Rivers, Southern Rivers, Southern Tablelands, Sydney Metro and Western Division (subdivided further into the IBRA Sub regions).

Data and Resources

Metadata Summary What is metadata?

Field Value
Language English
Alternative Title GDE HEVAE Sydney Metropolitan
Edition v1
Purpose Environmental management
Frequency of change Unknown
Keywords VEGETATION,WATER-Groundwater
Metadata Date 2018-02-21
Date of Asset Creation 2022-10-10
Date of Asset Revision 2022-10-10
Date of Asset Publication 2022-10-10
License Creative Commons Attribution 4.0
Equivalent Scale 25000
Vector representation
Record 1
Object type
Object count
Geospatial Topic Environment
NSW Place Name Hunter, Central Rivers

Dataset extent

Temporal Coverage From 2018-01-06
Datum GDA94 Geographic (Lat\Long)
Legal Disclaimer Read
Attribution NSW Department of Climate Change, Energy, the Environment and Water asserts the right to be attributed as author of the original material in the following manner: "© State Government of NSW and NSW Department of Climate Change, Energy, the Environment and Water 2022"
Groups Department of Planning and Environment—Water
DOI doi:10.25948/z3xr-ae10
DOI Creator name Dabovic, Jodie; Dobbs, Lucy; Byrne, Glenn; Raine, Allan
DOI Resource Type Ecological value assigned to groundwater dependent vegetation
DOI Resource Type General Description Dataset